如何为 Openlayers 切换器添加 KML 层？

Question

如何通过ol-ext Viglino向切换器添加 KML 层？

当我添加时：

var vectorSource = new ol.layer.Vector({
  source: new ol.source.Vector({
  url: "IG1.kml",
  format: new ol.format.KML()
})

图层未显示在地图上。

Answer 1

要出现在图层切换器中，图层必须具有标题属性

var vectorSource = new ol.layer.Vector({
  title: "KML Layer",
  source: new ol.source.Vector({
    url: "IG1.kml",
    format: new ol.format.KML()
  })
})

如果图层未显示在地图上，请检查您的服务器 MIME 类型中是否启用了 .kml 扩展。

Answer 2

试试：

import KML from 'ol/format/KML';
import VectorSource from 'ol/source/Vector';
import {Vector as VectorLayer} from 'ol/layer';

const vector = new VectorLayer({
  source: new VectorSource({
    url: 'IG1.kml',
    format: new KML(),
  }),
});